LTWOO ER9 & ERX - Electronic groepsets

[Ludo]

Mcmaster-Carr in US should have it

[kbernstein]

Joe from chinacycling hinted that all ltwoo groupsets were compatible with each other, despite a previous claim they weren't.  I'm sure somebody here has both eGR and a road groupset. Can you confirm the eGR RD can be paired with eRX shifters?

[boxof13]

Joe from chinacycling hinted that all ltwoo groupsets were compatible with each other, despite a previous claim they weren't.  I'm sure somebody here has both eGR and a road groupset. Can you confirm the eGR RD can be paired with eRX shifters?

@aramus1979 has done the homework for us awhile back. I can also confirm eR9 and eRX are compatible with each other as I have both.

I checked it for you, mounted rear derailleur eGR front eR9 works together, gear change works RD reacts to the right brake lever FD reacts to the left brake lever so the sets can be swapped. A large beer is due

[jonathanf2]

It's been a full year since I picked up 2 LTwoo ER9 groupsets, both units are still holding up! I was tempted to upgrade to version 3, but my version 1 units are still working fine. I had a few early battery related hiccups, but that problem was remedied by using the recommended 14500 800mah 3.7v batteries and periodically cleaning the charging port with cotton swabs and rubbing alcohol. The only modifications I've done to my groupset was change out the stock jockey wheels to Ultegra wheels, which in my opinion should be the default configuration (11t upper and lower as opposed to 11t/12t).

With the V3 improvements, I would probably still choose this groupset even compared to the likes of 105 Di2 or SRAM AXS. I just like having replaceable battery flexibility, the use of any type of mineral oil brake calipers and I can run whichever cassette speeds of my liking. I know people have had varying levels of success, but my ER9 setups have survived their first year! 

[toggle]

What difference do you spot after canging to Ultegra pulley wheels?

[pavlo.k]

I've been using my er9 for 5 months now and it's alright. I really hate the shifter buttons. They are mushy and a little hard to press. I also have egr and it's a night and day difference when it comes to buttons. Are there any hacks to make the buttons more "clicky"? Its summer here luckily but when Im wearing gloves I can't really tell if i pressed the button or not.

[jonathanf2]

What difference do you spot after canging to Ultegra pulley wheels?

There were two benefits I noticed switching to Ultegra pulley wheels. First sizing down the lower pulley wheel to 11t allowed me to bring the cage slightly closer to the small cog, especially on my 11-34t cassette (ER9/X is spec'ed for 32t max). It allowed tighter shifting and eliminated chain drops I was getting on downhill descents while on bumpy roads. Second benefit I noticed is that by switching the upper pulley wheel to the longer tooth 11t Ultegra upper, the chain stayed on track better. There were times I noticed on the stock LTwoo upper, if I accidentally shifted without pedaling the chain would go off track and jam.

[jonathanf2]

I've been using my er9 for 5 months now and it's alright. I really hate the shifter buttons. They are mushy and a little hard to press. I also have egr and it's a night and day difference when it comes to buttons. Are there any hacks to make the buttons more "clicky"? Its summer here luckily but when Im wearing gloves I can't really tell if i pressed the button or not.

Yeah, the V3 version seems to have fixed a lot of the small issues with the V1 like the mushy buttons. I also have the EGR on my gravel bike, and there are times I've thought about switching the shifters to my ER9 bike, especially since my left EGR shifter never gets any use.